»  Community »  Ashtray
#Geared Turbofan Jet Engine

Custom Search
Login | Register




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post subject: Geared Turbofan Jet Engine
PostPosted: Wed Jan 09, 2013 5:07 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27381
Location: Houston, Tx
The gas turbine design has really been at the cutting edge of what is possible in terms of materials and overall design for years. This geared turbofan engine is pretty amazing.

http://www.main.experiencetherave.com/t ... rbofan.pdf

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Thu Jan 10, 2013 4:52 am 
Fifth Gear
Joined: Tue Mar 13, 2007 12:56 am
Posts: 2372
Location: 10-9-oh(!), wa
Pretty cool. Seems like a simple concept but rather fragile in real application.

_________________
93 legacy wagon L, 22T swapped (TW imitator) now with five forward speeds.
johndrivesabox wrote:
Rally, my kyboard is brok, his has nohing o do wih h liquor.

Originalcyn wrote:
Apparently everyone hates Gabe.


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Thu Jan 10, 2013 6:50 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27381
Location: Houston, Tx
How so?

It's not a concept, it's going to be a production engine. With the size of the gearing, I can't see it being too fragile.

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Thu Jan 10, 2013 9:22 pm 
Fifth Gear
Joined: Mon Nov 06, 2006 3:41 am
Posts: 8352
Location: Tenino, WA
Probably referring to the fact that it has to maintain such a high efficiency to keep it from burning up the lubrication.

_________________
98 Metro Hatch Daily Driver :)
91 SS EJ20G Engine/Tranny/Diff Swap Build Thread Here
"Your testes are close to your bottom but you still play with them all the time." Jeremy Clarkson


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Fri Jan 11, 2013 12:08 am 
quasi-mod-o
quasi-mod-o
Joined: Wed May 30, 2007 6:11 am
Posts: 2761
Location: Charlotte, NC
That's how a lot of turbo engines work. They have to operate at really close to 100% but use variable stator vanes, props, or blades to change the torque without having to "increase the speed of the engine". Since they operate at that high level, they design the oil system that way to be most efficient.

_________________
Tony
90 LS Spec rio red sold
91 SS rio red R.I.P
90 Mazda Miata
2005 GT SWP

92ss satinsvoice wrote:
LOL! that block was like F*** THIS! IM OUT!

mike-tracy wrote:
Word. I'd love to get my hands on one of those trannies, but I just can't stomach the cost


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Fri Jan 11, 2013 3:45 am 
Fifth Gear
Joined: Tue Mar 13, 2007 12:56 am
Posts: 2372
Location: 10-9-oh(!), wa
kimokalihi wrote:
Probably referring to the fact that it has to maintain such a high efficiency to keep it from burning up the lubrication.

This is what I meant.
And by 'simple concept', it seems so simple yet is only now being put into production.

_________________
93 legacy wagon L, 22T swapped (TW imitator) now with five forward speeds.
johndrivesabox wrote:
Rally, my kyboard is brok, his has nohing o do wih h liquor.

Originalcyn wrote:
Apparently everyone hates Gabe.


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Fri Jan 11, 2013 5:05 am 
Fifth Gear
Joined: Mon Nov 06, 2006 3:41 am
Posts: 8352
Location: Tenino, WA
Yeah I don't know the technology but 99.3% efficiency sounds pretty high.

_________________
98 Metro Hatch Daily Driver :)
91 SS EJ20G Engine/Tranny/Diff Swap Build Thread Here
"Your testes are close to your bottom but you still play with them all the time." Jeremy Clarkson


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Fri Jan 11, 2013 4:31 pm 
First Gear
Joined: Wed Aug 04, 2010 2:33 pm
Posts: 52
Location: Connecticut
Cool article. Looks like by the nature of the gearing, the fan and engine rotate in opposite directions, hypnotizing! You can see gear teeth on the outside of the ring gear driving the fan, I wonder if there is more gearing involved that is not shown. I like the Connecticut shout outs too, I wonder if they build them at Pratt's E. Hartford plant.

_________________
1994 Wagon - Turbo swapped DD
EJ22T, 3'' TBE, Apexi Intake, Spec Clutch, H&R's, Robtune, VF39, 550's, Walbro, V2 STI Top Mount, AEM Wideband


Profile  Offline
Reply with quote  
 Post subject: Re: Geared Turbofan Jet Engine
PostPosted: Fri Jan 11, 2013 7:25 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27381
Location: Houston, Tx
beatersubi wrote:
And by 'simple concept', it seems so simple yet is only now being put into production.



Ahh ok.



It'd be cool to see one in person without the engine faring on.

_________________
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


Profile  Offline
Reply with quote  

Display posts from previous:  Sort by  

Post new topic Reply to topic  [ 9 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest

Panel

Top You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
Search for:
Jump to:  

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Dizayn Ercan Koc